Milk-strainer.



J. W. FREDRUM.

MILK STRAINER.

APPLIGATION FILED JULY 30, 1909.

969,357, Patented Sept. 6,1910.

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MILK STEAINER.

APPLICATION FILED JULY 30, 1909. 969,357. Patented Sept. 6, 1910.

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Sum'wtoz JOHN 'W. FBEDRUM, OF DENVER, COLORADO.

' Specification of Letters Patent.

Patented Sept. 6, 1910.

=App1icat1onfiled July 80, 1909. Serial No. 510,400.

- To'all whom it-ma y comm: i

Be it known that I, J OHN W. FREDRUM, a citizen of the United States,residing in the city and county of Denver and State of Colorado, haveinvented certain new and useful Improvements in Milk-Strainers; and I dodeclare the following to be a full,

clear, and exact description of the invention, such as will enableothers skilled in the art to which it-appertains to make and use thesame, referenee'bein had to the accompanying drawings, ant to theletters and figures of reference marked thereon,

which form-a part of this specification.

-My invention relates to improvements in -milk strainers myobject beingto provide a construction of this class which shall effectually performthe strainer function, provision being made for the lodgment of anysolid foreign matter that may be contained in the milk, whereby saidforeign matter is entirely removed from the strainer medium. Provisionis also made to prevent the clogging of the strainer cloth by' causingany solid matter contained in the milk to pass to the aforesaid lodgmentwithout coming in direct contact at any time with the strainer cloth orother medium.

Having briefly outlined my improved construction, I will proceed todescribe the same in detail, reference being made to the accompanyingdrawing in which is illustrated an embodiment thereof.

In this drawing: Figure 1 is a side elevation of a. milk bucket with myimproved construction in place, the cover of the strainer being open.Fig. 2 is a detail elevation of the strainer shown on a larger scale.Fig. 3 is a vertical section taken through the strainer, cutting theupper portion of themilk bucket, the strainer being shown in placeandthe parts being illustrated on a still larger scale.

The same reference characters indicate the same parts in all the views.

Let the numeral 5- designate my improved strainer, considered in itsentirety and whose body portion is composed of an upper cylindricalortion 6, a frusto-conieal portion 7, exten ing downwardly from thelower edge of the portion 6; anda cylindrical part 8, extendingdownwardly from the lower extremity of the part 7. The part 8 is open atthe bottom-and provided with an upwardly projecting flange 9, extendingabove the union 10 between the lower extremity'of the part 7 and theupper extremity of the part 8,.thus forming a circumferential recess 12between the flange 9 and the lower extremity of the part 7. Detachablyconnected with the body of the strainer and located within the same,when the parts are assembled, is v a member 13 composed 'of a centrallylocated cone-shaped part 14, whose base is connectedas shown at 15, witha depending cylindrical part 16,

secured at its lower extremity toa relatively short, vertically disposedcylindrical part or ring '17, which is bent outwardly as shown at 18, toform an offset, from which an outwardly flared part 19 extends upwardly,approximately parallel with the part 7 of the body member.

The lower open extremity of the part 8 of the body member is covered bya milk straining medium 20, composed of cloth or other suitable meshmaterial. The outer edge of this strainer cloth is carried upwardlyaround the lower edge of the part 8 and-secured in place by a ring orband21.

Before placing the strainer member 13 in position, a relatively largemilk straining medium 22, composed of cloth or other suitable meshmaterlal is placed within the body of the strainer, whereby it is causedto cover the upper extremity of the part 8 resting upon the upper edgeof the upwardly projecting, flange 9. This strainer cloth has its cess12, asshown at 2 1. The upper edge of he outwardly flared part 19 alsoengages the strainer cloth at 25, and presses it tightly against theinner surface ofthe art 7. The

size of thecloth is such that w en the central member 13 is placed inposition, as just explained, the cloth will be held sufficiently tautfor the pur ose. In" fact the securing of the cloth at t e upperedge ofthe part 6 may be done last, thus giving the user an opportunity tostretch the cloth taut or give it the desired tension, as the securingring is applied. The part of the strainer cloth coverin the upperextremity of the member 8 is designated 26 (see Fig. 3). When thestrainer is in use, this lower part is set within the upper reduced part27 0f the milk bucket 28, the lower part of the body memher 7 engagingthe upper edge of the mllk bucket top, as shown at 29.

To the apex of the cone-shaped perforated member 14 is attached aprotecting button 30, which revents injury to the top of the cone and aso secures the fabric of the cone at this point.

Assuming that the parts of the stralner are assembled in the relationillustrated in Fig. 3, the milk. to be strained is poured into thestructure, coming in contact with the upper part of the strainer cloth,above the outwardly flared art 19 of the centrally lo cated member. T emilk also comes in contact with the erforated, cone-shaped part 14,whose meswhile not sufficiently fine, for perfectly straining the milk,is nevertheless so fine as to reject any relatively large solidparticlesof foreign matter or substance, which are caused to roll downthe outer surface of the cone and find lodgment u )on the offset 18,surrounding the cylindrical part 16 at the base of the cone, the offsetbeing far enough below the upper ed e of the 'part 16 to form a chamberof su clent size for the purpose. Practicallfy all of the milk must passthrough the per orated cone 14, since any milk which passes through theupper part of the strainer cloth 22 above the upper edge of theoutwardly flared part '19, finds no escape and must therefore returnthrough the strainer cloth, passing through the cone 14 and thencethrough the strainer cloth parts 26 and 20 in succession, beforeentering the milk bucket. It will thus be observed that all of the milkis first caused to pass through the relatively coarse strainer part 14,whereby the forelgn particles of relatively large size are removed,after which it is caused to pass in succession through the strainercloth parts 26 and 20 whereby it is thoroughly strained.

The upper part of the strainer body is equipped with a cover 31, havingan ear 32, connected with a pivot pin 33, the latter being mounted uponan ear 34, secured to the upper part of the strainer body. Interposedbetween the cars 33 and 34, is a spacing sleeve 35. By virtue of thisconnection, the cover may be quickly thrown to the closed or openposition. Of course when the strainer is in use, the cover must be openbut it is desirable to have the strainer closed at all times when not inuse, hence the necessity for a cover.

Having thus described my invention, what I claim is: v

1. A milk strainer, composed of a body member, having a reduced partextending downwardly from the upper part of the bod member, and adaptedto enter the milk bucket, the said reduced part having a flangeprojecting upwardly from its connection with the upper part of the bodymember, forming a circumferential itddss, a strainer cloth adapted torest upon the top of the u wardly projecting flange and a centrally ldcated member having a perforated upwardly projecting part, a depend-'ing cylindrical part, adapted to enter the sald circumferential recess,and an outwardly flared part, forming a circumferential lodgment forforeign matter, between the outwardly flared part and the said 0 7lindrical part of the central member, s hstantially as described.

2. A strainer composed of a body member, havin its lower portion reducedin size and a apted to enter the body of the milk bucket or otherreceptacle, the said lower part having a flange projecting u wardlyabove the' connection between tie lower and upper parts of the bodymember, and a centrally located member having a perforated, cone-shapedupwardly projecting art, provided with a depending cylindrica portion,adapted to enter the said circumferential recess, a strainer cloth passing over the top of the said flange and adapted to be ressed into thesaid recess by the cylindrical depending part of the central member,substantiall as described.

3. A strainercomposed o a body member, having a reduced cylindricalpart, extending downwardly from the ofthe upper portion of the bodmember, the latter being outwardly flared from the said connection, thelower 0 lindrical part projecting upwardly above tii e said connectionto form a circumferential recess, a strainer cloth ada ted to engage theup er edge of the said flange and also to overl ap the upper edge of thebody member, and a centrally located member having a perforated,cone-sha ed, upwardly projecting central part, a epending, cylindricalpart, ada ted to press the strainer cloth into the sai circumferentialrecess, and an outwardly flared part, connected with the cy lindricalpart below its upper edge to form a lodgment for forei matter, the upperedge of the outwardly flared part being adapted to press the strainercloth tightly against the adjacent wall of the body member,substantially as described.

4. A strainer comprising a body member, composed of an upper cylindricalpart, a lower frusto-conical art, and a bottom cylindrical part,extending downwardly from its connection with the lower edge of thefrusto-conical part and having a flange projecting upwardly from saidconnection, a strainer cloth adapted to engage the upper edge of thesaid flan e and also the upper edge of the cylindrical part of the b0 ymember, and a centrally located member having a perforated cone-shapedcentral part, to which is made fast a depending cylindrical part, and anoutwardly lower edge 1 flared frusto-conical part connected with thecylindrical part, below its upper edge, the upper edge of thefrusto-conlcal part being arranged to press the strainer cloth tightlyagainst the adjacent wall of the frusto-conical part of the body member,substantially as described.

5. A strainer, composed of a body part, whose lower portion is adaptedto enter the top of' a milk bucket or other receptacle, a centrallylocated member having an integrally formed perforated cone-shapedupwardly projecting part, the lower part of the body member below thecone-shaped part of the central member havin a circumferential flange orshoulder on 1ts inner periphery, a strainer supported by the said flangeor shoulder within the circular member, and a second strainer carried bythe lower part of the said circular member, through which strainers themilk must pass after assin through the perforated coneshape mem er.

6. A milk strainer, comprising a body member, having an upperfrusto-conical part, a cylindrical part, extending d0wnwardly from itsconnection with the frustoconical part, and having a flange projectingupwardly from said connection, a strainer cloth attached to the lowerextremity of the depending cylindrical part, a secondstrainer cloth enaging the upper edge of the said upward ly projecting flange and adaptedtooverlap into the recess between said flange. and the adjacentfrusto-conical body part, and a centrally located, perfo rated,cone-shaped part, having a depending cylindrical portion adapted toengage the strainer cloth outside of the said upwardly projectingflange, substantially as described.

In testimony whereof I afllx my signature in presence of two witnesses.

JOHN W. FREDRUM.

Witnesses:

A. J. OBRIEN, A. EBERT OBRIEN.

